If you need reference standards with special parameters (concentration, matrix, container size etc.) we are offering you our ROTI ® Star multi-element standard solutions as custom-made solutions which are manufactured with your special requirement. Multi Element Standards for ICP-MS (Inductively Coupled Plasma - Mass spectrometry) The standard solutions are manufactured from high-purity starting material (usually ≥99,999 %) under clean room conditions. Acids (purified by means of sub-boiling distillation) and water of highest quality are used to manufacture the solutions. The solutions are certified and can be traced to NIST standard reference solutions. Solutions are produced according to ISO 17034 in an accredited environment. The solutions are tested in a laboratory accredited to ISO/IEC 17025 and supplied with a detailed, batch-specific certificate of analysis. The range encompasses different multi-element standards in various compositions for tuning, calibration and interference tests.In multi-element solutions, the standard deviation of the respective element concentration is a maximum of 5% of the specified value. ICP-MS Interference Check Solution A - 6020 ROTI ® Star 12 elements in 5 % HNO 3 , concentration in μg/l